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Boulder

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J F M A M J J A S O N D

344 mi 554 km of trail 27 Featured Runs

Gems 2 Gems Easy Trails 149 Trails Intermediate Trails 52 Trails Hard Trails 2 Trails

Situated at the base of the iconic Flatirons, Boulder is known for its outdoor activities and abundant sunshine. From hiking to running to climbing to biking to just soaking in the scenery, Boulder has something for everyone to enjoy. Conveniently located at the base of the mountains, the city itself is home to a thriving entrepreneurial community, some of the best restaurants in the region, the historic Pearl Street Mall, and the bustling campus of the University of Colorado. Additionally, the city boasts more than 45,000 acres of open space, more than 60 urban parks, and 300 miles of bike paths, making it a mecca for outdoor enthusiasts. To learn more about what Boulder has to offer, visit the city's website.

Local Info

Whether you are looking for an easy run from town or a more challenging outing with some serious elevation gain, the trails in Boulder will not disappoint. A great place to start is Chautauqua Park, one of the remaining few functioning Chautauquas left in the country. From here, you can access trails like Mesa Trail and Royal Arch Trail to get an up close and personal look at the Flatirons. If you are looking for more of a challenge, try all or part of the well-known Boulder Skyline Traverse. Other popular runs in the area include Flagstaff Trail, Mount Sanitas Trail, Betasso Preserve, and Sunshine Lion's Lair Loop.

For info on local running news, events, and running groups, check out BoulderRunning.com which is a great resource for all things Boulder running related.

Visiting Tips

The best time to hit the trails tends to be March through November, with a few exceptions. During the winter, some trails are accessible, especially at Hall Ranch, the Boulder Reservoir, or in the Marshall Mesa area as snow and ice will melt quickly during warm spells. There are times in spring or fall when rain or snow storms can make trails too muddy to use. While Boulder is well-known for its sunny weather, be aware that weather in Colorado can be unpredictable, and afternoon thunderstorms are a common occurrence in the summer.

Camping & Lodging

While there is no camping in the city of Boulder or on City of Boulder open space, there are several nearby camping options just outside the city. A quick drive will get you to the Arapaho and Roosevelt National Forests located west of Boulder and offer some great campsites and more spectacular trails to explore.

The Boulder Adventure Lodge (A-Lodge for short) is only 5 minutes up Boulder Canyon from downtown Pearl Street. Strategically located for adventure enthusiasts, the A-Lodge provides easy access to Boulder's climbing, biking, fishing, hiking and trail running. The A-lodge includes an onsite slackline park, outdoor fire pits, two hot tubs, private rooms & suites, a hostel room, and even some camping options.

Boulder offers a variety of accomodations from hotels to bed and breakfasts, and a list of local lodging options can be found here.

Food & Drink

Boulder has a vibrant local restaurant and microbrewery scene, all located so close to the trails that you can easily find a place to dine and relax in between activities. Visit Boulder's website for a list of the best restaurants that downtown Boulder has to offer.

Other Activities

In addition to awesome hiking, running, and riding, Boulder is blessed with an amazing amount of rocks with decent variety of rock type for cragging minutes from downtown. At one point in history, some might argue that the rocks around this town were a focal point for the advancement of American climbing. Still, these crags are rich with history. Today, with perhaps the exception of the high-end climber, nearly every climber can find something nearby to satisfy their climbing desires.

To learn more about rock climbing in Boulder, check out the Mountain Project page.

Gems in Boulder - 2

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Featured Runs in Boulder - 27

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Trails in Boulder - 176

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2.3 mi 3.7 km #1 Rattlesnake Gulch Trail
Coal Creek, CO
2.3 mi 3.7 km Coal Creek, CO
Minor Issues
Update
Dry - Loop is closed. trail is open to divide point.
35 days ago
42 
0.6 mi 1.0 km #2 First-Second Flatiron Trail
Boulder, CO
0.6 mi 1.0 km Boulder, CO
Minor Issues
Update
Some Mud
8 days ago
38 
6.3 mi 10.1 km #3 Mesa Trail
Boulder, CO
6.3 mi 10.1 km Boulder, CO
Minor Issues
Update
Some Mud - A few muddy stretches but mostly dry
7 days ago
25 
2.2 mi 3.5 km #4 Lion's Lair Trail
Boulder, CO
2.2 mi 3.5 km Boulder, CO
All Clear
Update
Dry: Beautiful conditions.
47 days ago
17 
1.6 mi 2.6 km #5 Green Mountain West Ridge
Boulder, CO
1.6 mi 2.6 km Boulder, CO
All Clear
Update
Dry
20 days ago
25 
3.1 mi 5.0 km #6 Eldorado Canyon Trail
Coal Creek, CO
3.1 mi 5.0 km Coal Creek, CO
All Clear
Update
9 days ago
30 
1.2 mi 2.0 km #7 Forsythe Canyon Trail
Coal Creek, CO
1.2 mi 2.0 km Coal Creek, CO
Unknown
Update
17 
1.9 mi 3.1 km #8 Ceran Saint Vrain Trail
Nederland, CO
1.9 mi 3.1 km Nederland, CO
Minor Issues
Update
Snowy, Icy - Traction recommended. Snowshoes not required.
77 days ago
10 
0.7 mi 1.1 km #9 Boy Scout
Boulder, CO
0.7 mi 1.1 km Boulder, CO
Unknown
Update
1.3 mi 2.1 km #10 Mount Sanitas Trail
Boulder, CO
1.3 mi 2.1 km Boulder, CO
Unknown
Update
14 
1.1 mi 1.8 km #11 Shadow Canyon
Boulder, CO
1.1 mi 1.8 km Boulder, CO
All Clear
Update
Some Mud - Beautiful!
11 days ago
11 
0.8 mi 1.2 km #12 Mallory Cave Trail
Boulder, CO
0.8 mi 1.2 km Boulder, CO
All Clear
Update
Dry
48 days ago
11 
0.4 mi 0.6 km #13 Woods Quarry
Boulder, CO
0.4 mi 0.6 km Boulder, CO
Unknown
Update
10 
0.9 mi 1.4 km #14 Royal Arch Trail
Boulder, CO
0.9 mi 1.4 km Boulder, CO
All Clear
Update
Snowy, Mostly Dry, Some Mud, Icy - Tiny spots of ice covered with mud near the end
46 days ago
10 
1.4 mi 2.3 km #15 Green Bear
Boulder, CO
1.4 mi 2.3 km Boulder, CO
All Clear
Update
Dry
37 days ago
1.4 mi 2.2 km #16 Fern Canyon Trail
Boulder, CO
1.4 mi 2.2 km Boulder, CO
Minor Issues
Update
Muddy, Snowy - Snow/slush near the top
1 day ago
11 
0.3 mi 0.4 km #17 South Boulder Peak
Boulder, CO
0.3 mi 0.4 km Boulder, CO
Minor Issues
Update
Snowy, Icy
61 days ago
1.4 mi 2.2 km #18 Skunk Canyon Trail
Boulder, CO
1.4 mi 2.2 km Boulder, CO
Unknown
Update
1.3 mi 2.1 km #19 North Fork Shanahan Trail
Boulder, CO
1.3 mi 2.1 km Boulder, CO
Unknown
Update
0.4 mi 0.7 km #20 Amphitheater Trail
Boulder, CO
0.4 mi 0.7 km Boulder, CO
All Clear
Update
Dry, Mostly Dry
22 days ago

Photos of Boulder - 519

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